[TheForge] Re: What is it

Fri Sep 13 15:02:00 2002

If my memory serves me correctly, there are three lasers of varying =
frequencies.  The clear, light sensitized acrylic reacts at the point of =
intersection of the three beams.

-----Original Message-----
From: John Newman [mailto:[email protected]]
Sent: Friday, September 13, 2002 11:44 AM
To: [email protected]
Subject: Re: [TheForge] Re: What is it

There are other rapid prototyping processes.  Others I have seen are =
stereo
lithography in which a tank is filled with a special liquid a laser =
travels
around and solidifies portions of the plastic when it is done you have a
solid model.  There is also a process where a tiny nozzle extrudes a =
stream
of plastic that is laid up in layers ( imagine drawing with a tube of
toothpaste).   Another I have heard of but have not seen involves a =
machine
that cuts out pieces of paper and glues them up layer by layer, =
producing
something like a plywood.

John N

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